x/vulndb: potential Go vuln in github.com/open-policy-agent/opa: CVE-2022-23628

[GoVulnBot]

In CVE-2022-23628, the reference URL github.com/open-policy-agent/opa (and possibly others) refers to something in Go.

• Commit: open-policy-agent/opa@bfd984d
• PR: format: make groupIterable sort by row open-policy-agent/opa#3851

module: github.com/open-policy-agent/opa
package: opa
description: |
    OPA is an open source, general-purpose policy engine. Under certain conditions, pretty-printing an abstract syntax tree (AST) that contains synthetic nodes could change the logic of some statements by reordering array literals. Example of policies impacted are those that parse and compare web paths. **All of these** three conditions have to be met to create an adverse effect: 1. An AST of Rego had to be **created programmatically** such that it ends up containing terms without a location (such as wildcard variables). 2. The AST had to be **pretty-printed** using the `github.com/open-policy-agent/opa/format` package. 3. The result of the pretty-printing had to be **parsed and evaluated again** via an OPA instance using the bundles, or the Golang packages. If any of these three conditions are not met, you are not affected. Notably, all three would be true if using **optimized bundles**, i.e. bundles created with `opa build -O=1` or higher. In that case, the optimizer would fulfil condition (1.), the result of that would be pretty-printed when writing the bundle to disk, fulfilling (2.). When the bundle was then used, we'd satisfy (3.). As a workaround users may disable optimization when creating bundles.
cves:
  - CVE-2022-23628
links:
    pr: https://github.com/open-policy-agent/opa/pull/3851
    commit: https://github.com/open-policy-agent/opa/commit/bfd984ddf93ef2c4963a08d4fdadae0bcf1a3717
    context:
      - https://github.com/open-policy-agent/opa/security/advisories/GHSA-hcw3-j74m-qc58

See doc/triage.md for instructions on how to triage this report.

[gopherbot]

Change https://go.dev/cl/392758 mentions this issue: reports: add GO-2021-0316.yaml for CVE-2022-23628

[gopherbot]

Change https://go.dev/cl/416454 mentions this issue: x/vulndb: add reports/GO-2022-0316.yaml for CVE-2022-23628